Thirds to charles strattmann and j



MWZS SR SEARCH Rt KR 4331215 l /552 :5 him and 2o pared,a"nd quickly-applied compound for the 3c ing for ISRAEL RABINOWICIZ, or

T STATES, PATENT 1 OF E.-

soHENEoTliDY, NEW YORK, Assienon on TWO- THIRDS TO CHARLES STRATTMANN AND J. TELLER SCHOOLCRAFT, OF

j SAME PLACE;

j INS-U LATING v srncrmca'non' forming part of Letters coMPou uoQgma No. 453,215, dated July 29', 1890.

Application filed March 29, 1890- Serial No- 345,861. (No, specimen) To all whom it may concern:

Be it known that I, ISRAEL RABINOWIGZ, a subject or citizen of the Russian Empire, residing at Schenectady, in the county of 5 Schenectady and State of'New York, have invented certain new and useful Improvements in Insulating Compounds; and I do hereby declare the followjn g to be a full, clear, and exact description of the invention, such as will en- IO able dthers skilled in the art to which it appertains to make and use the same.

' My invention or discovery has reference to a compound or mixtnrc for fireproofing,waterproo' ng, an insulating purposes, a particupreferred use of the composition being that of forming an insulating coating or envelope on wiresused to conduct electric currents, the object of the invention being to provide a simple, cheap, efiicient,readilyprepurposes named; and to these ends the invention consists in the combination of the several ingredients or components, substantially as willbe described and claimed.

2 5 In carrying my invention into practical effectI employ the following elements, constitucuts, or ingredients: first, palm stearine pitch; second, gilsonite; third, tartaric acid. This is the ordinary or dextro tartaric acid, hav-.

its chemical formula o,H,9, r pH (Ql l) :OOOH or GH (OH)'-COOH. It is well :5 1 known that tartaric acid whenheated to 100 loses no water; when heated to 170 it fuses;

but at a higher temperature it becomes car- 35 bonized, emitting during the process of carbonization a peculiar and highly-characteristic odor. hese properties of tartaric acid make it valuable. as an ingredient with my. compound; fourth, some salt formed by the tartaric acid, either that which it forms with potassium or sodium or .antimopyppr sp ne omen-hemp? The s. It preferably employed is potassium bitartrate, which is one of the tartrates, and is an acid salt termed hydric- 45 potassium tartrate or bitartrate of potassium, or the more usual term of potassium bitartrate, its chemical formula being K11". C H,O Instead of using potassium bitarployed. These component parts are mixed together in suitable proportion to form the insulating, fireproofing, or waterproofing compound; They will be caused to readily unite by the application ofheat. wp en warm and ready for insulating or other plir'pdses, the sauce, 3 nillheinalinnidionnaneaieeihla soft,'plian t-, or pla'tic ;vbut-when the compoun is cool'edi itasquitehard, although still flexible. It has the general appearance of tar. It is generally applied to the article with which it isto be employed when in the warm or heatedstate. If it is to be used for the purpose'of insulating an electric conducting-wire, itmay be applied directly to the wire, forming a surrounding envelope or gpgging thereupon, or some substance-such as cotton, linen, 01 some textile fabric--may be saturated with the compound and then wound around or securely attached to the'wire, thus providing the wire with an effective insulating material lhe salts of taptaticacidareincombustibh absoldteTTWhen subjected to a strong ant "nave u egree of heat, large quantities 01 water, steam, and carbonic acid are evolved therefrom. Therefore it will be seen tha when my improved compound for fireproofin; is used with any object for thrposeo rendering it non-combustible the effect wil be, when fire or flame approaches the object to cause or form a bulb or bellows, and alsl to cause the carbonic acid, water, steam, ant other elenigrits to be given off by the com pound, and they will act in a certain way a extinguish the flames in a measure, and, fur thermore, there will be formed a hard non combustible deposit of potassium carbonatt which will efiectuall y protect the obj cct fror becoming ignited by the flames.

It will now be proper to state the propol tions in which the several ingredients of m compound are united. These proportions at as follows: I take seventy (70) pounds of pal! stearine itch, forty (40) pounds of gilsonitt ninewTg odnds of potassium bitartrate, an two (2) pounds of tartaric acid. 'These 211 then comniingled and thoroughly mixed lit gether. From this the proportion of the so trate, the salts of other metals may be em:

eral ingredients will be fully understood.

It will be seen that I employ the inorganical salts of organical acids. This is an important feature of the invention, and it covers the combination of an inorganical with any organical acid.

Having thus described my invention, what I claim as new, and desire to secure by Letw ters Patent, is

1. The hereindescribed compound for fireproofing, waterproofing, insulating, and other purposes, which consists, essentially, of tartaric acid, gilsonite, a metallic salt, and pitch, subs antially in the proportions specified.

2. The herein-described compound for fireproofing, waterproofing, insulating, and other purposes, consisting, essentially, of tartaric acid, one of its salts, gilsonite, and palm stearine pitch, substantially in the proportions specified.

3. The herein-described compound for fireproofing, waterproofing, insulating, and other purposes, which consists, essentially, of tartaric acid, potassium bitartrate, gilsonite', and palm stearine pitch,substantially in the proportions specified. I

4. The herein-described compound for fireproofing and other purposes, which consists of tartaric acid, potassium bitartrate, gilsonite, and palm stearine pitch united in the fol lowing proportions: seventy (70) pounds of palm stearine pitch, forty (40) pounds of gilsonite, nine (9) pounds of potassium bitartrate, and two (2) pounds of tartaric acid.

ISRAEL RABINOWICZ.

Witnesses:

ALBERT L. HALSEY,

FRANK H. SWART.

In testimony whereof I 'affix my signature in presence of two witnesses. 

